List of S P 500 companies - WikipediaRecent changes to the list of S P 500 Components S P Dow Jones Indices updates the components of the S P 500 periodically, typically in response to acquisitions, or to keep the index up to date as various companies grow or shrink in value Between January 1, 1963 and December 31, 2014, 1,186 index components were replaced by other components